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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 12729128 B1

PDFFull Text
Date of Patent:
Sep. 08, 2026

Filed:

Mar. 09, 2020

Calcium carbonate sintered body and method for producing same, and bone grafting material

Applicant:

Shiraishi Central Laboratories Co. Ltd., Amagasaki-city, JP;

Inventors:

Hidero Unuma, Yonezawa-city, JP;

Toshitake Furusawa, Yonezawa-city, JP;

Shota Umemoto, Amagasaki-city, JP;

Masahiko Tajika, Amagasaki-city, JP;

Assignee:

SHIRAISHI CENTRAL LABORATORIES CO. LTD., Amagasaki-city, JP;

Attorney:

WHDA, LLP

Primary Examiner:

Anthony J Zimmer

Assistant Examiner:

Logan undefined Laclair

Int. Cl.
CPC ...
C01F 11/18 (2006.01); A61L 27/10 (2006.01); A61L 27/30 (2006.01); B01J 20/04 (2006.01); B01J 20/28 (2006.01); B01J 20/30 (2006.01);
U.S. Cl.
CPC ...
C01F 11/185 (2013.01); A61L 27/10 (2013.01); A61L 27/306 (2013.01); B01J 20/043 (2013.01); B01J 20/28004 (2013.01); B01J 20/28011 (2013.01); B01J 20/28059 (2013.01); B01J 20/3064 (2013.01); B01J 20/3078 (2013.01); A61L 2430/02 (2013.01); C01P 2004/03 (2013.01); C01P 2004/61 (2013.01); C01P 2004/62 (2013.01); C01P 2004/64 (2013.01); C01P 2006/10 (2013.01); C01P 2006/12 (2013.01); C01P 2006/60 (2013.01); C01P 2006/80 (2013.01);
Abstract

Provided is a method for producing a calcium carbonate sintered body whereby a good sintered body can be obtained without having to use any sintering aid. A method for producing a calcium carbonate sintered body includes the steps of: compacting calcium carbonate to make a green body; heating the green body under a condition of a temperature of 500° C. or lower to remove an organic component contained in the green body; and sintering the green body under conditions of a carbon dioxide atmosphere and a temperature of 450° C. or higher to obtain a calcium carbonate sintered body.

Find Patent Forward Citations

Unuma, Hidero. (2026). Calcium carbonate sintered body and method for producing same, and bone grafting material (U.S. Patent No. 12729128). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12729128

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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